The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.
http://NAVC.informz.net/z/cjUucD9taT02MzM5NzUwJnA9MSZ1PTEwODE3NDg2MjMmbGk9NDE1MTQyOTI/index.html